Verified Answer :

The correct answer is estimate.

Estimate is another word for an approximate value of a number; it is also the verb that means to find that approximate value.

Answer;

Estimating

Explanation;

To find an approximate value for a number is called estimating.

-To approximate is to calculate the value of something based on informed knowledge.

- Approximate is an estimation of a number or rounding a number to its nearest place value.

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